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Gastroesophageal reflux disease (GERD)—the chronic backflow of stomach contents into the oesophagus—is one of the most common digestive disorders worldwide. While its classic symptoms of heartburn and regurgitation are well known, an expanding body of evidence now suggests that GERD may have consequences far beyond the digestive tract. A compelling new study has found that GERD may significantly increase the risk of cardiovascular issues, including high blood pressure, unhealthy cholesterol levels, and heart attacks [1].
This emerging connection positions GERD not just as a condition of digestive discomfort, but as a potential cardiovascular risk factor requiring active management.
The study, employing a sophisticated genetic analysis method known as Mendelian randomisation, was designed to uncover causal relationships while controlling for confounding factors like age, weight, and lifestyle. By using genetic variants as proxies for GERD, researchers were able to isolate the disease’s direct impact on cardiovascular health [1].
The findings were striking. The analysis revealed that individuals with a genetic predisposition to GERD were more likely to have:
Elevated systolic and diastolic blood pressure,
Higher levels of LDL (“bad”) cholesterol and triglycerides,
Reduced levels of HDL (“good”) cholesterol [1].
These detrimental changes in blood pressure and cholesterol were directly linked to a 27% higher risk of heart attack and a 36% increased likelihood of developing hypertension [1,2]. Importantly, the reverse was not true: cardiovascular conditions like hypertension or high cholesterol did not appear to increase the risk of GERD, reinforcing the direction of causality from reflux to heart disease [1].
The study also illuminated the pathways through which GERD exerts its cardiovascular effects. Hypertension emerged as a major mediator, accounting for a substantial 35% of GERD’s impact on heart attack risk. Cholesterol abnormalities also played a significant role, jointly amplifying the risk [1].
These findings align with a growing body of research. A systematic review and meta‑analysis of six cohort studies, encompassing over 1.3 million participants, confirmed that patients with GERD had a pooled 27% increased risk of acute myocardial infarction, with chronic inflammation and oxidative stress identified as likely underlying mechanisms [2].
The exact biological pathways linking GERD to cardiovascular disease are an area of active investigation, but several plausible mechanisms exist. The chronic inflammation characteristic of GERD may contribute to systemic inflammation, a known driver of atherosclerosis (hardening of the arteries). Additionally, the shared impact of GERD on both blood pressure and lipid profiles suggests a direct, systemic effect of the disease [1,2].
Furthermore, the close anatomical relationship between the oesophagus and the heart may play a role. Acid in the oesophagus can trigger nerve reflexes that potentially affect coronary blood flow, and shared risk factors such as obesity likely contribute to both conditions. These findings highlight the importance of not ignoring persistent reflux symptoms, especially in individuals with other cardiovascular risk factors.
For individuals living with frequent heartburn, regurgitation, or the perplexing throat symptoms of laryngopharyngeal reflux (LPR)—such as chronic cough, hoarseness, or a lump in the throat—these findings add a new and important dimension to the conversation with their doctor. Managing GERD effectively may do more than relieve digestive discomfort; it could also contribute to a healthier heart.
The first step is obtaining a clear and objective diagnosis. While traditional methods like endoscopy or 24‑hour pH monitoring are invasive and cumbersome, a simple, non‑invasive reflux test is now available. Pepfast pepsin detection kit offers a convenient saliva test that detects the presence of pepsin—a digestive enzyme found only in the stomach. The presence of pepsin in saliva serves as a direct and reliable biomarker of gastric reflux, providing objective evidence to help confirm or rule out GERD and LPR.
For healthcare professionals, these epidemiological insights suggest that a comprehensive cardiovascular risk assessment may be prudent for patients diagnosed with chronic GERD. By identifying and managing reflux, clinicians may have an opportunity to address a previously underappreciated contributor to cardiovascular risk.
At Maxhealth Innovative Meditech (Wuxi) Co., Ltd. , we are dedicated to providing end‑to‑end diagnostic and therapeutic solutions for patients suffering from GERD and LPR. Our portfolio includes Pepfast (rapid, non‑invasive pepsin detection), Peptest (laboratory‑based confirmatory testing), and Gasrelief (alginate‑based physical barrier therapy). We actively seek global B2B distribution partners to bring these proven solutions to new markets. For partnership inquiries, please contact our commercial team.
1. Can GERD cause a heart attack?
The study found that GERD is associated with a significantly increased risk of heart attack. The research, using genetic methods to establish causality, showed a 27% higher risk in individuals with GERD [1,2]. It is an important risk factor, though not a direct cause in every case.
2. Does treating GERD reduce my cardiovascular risk?
While more research is needed, these findings suggest that effectively managing GERD could reduce the burden of high blood pressure and unhealthy cholesterol levels it contributes to, potentially lowering the risk of cardiovascular events. This underscores the importance of speaking to your doctor about an appropriate management plan for your reflux.
3. I don't always have heartburn – can I still have reflux?
Yes. Many people have LPR, often called “silent reflux,” which causes throat symptoms like a chronic cough, hoarseness, feeling of a lump in the throat, or excessive mucus, without the classic symptom of heartburn. A non‑invasive pepsin test like Pepfast can be useful for this type of reflux.
4. How can I get tested for reflux?
You can discuss your symptoms with your doctor, who can guide you on the appropriate diagnostic pathway. For a convenient, non‑invasive option, Pepfast is available through healthcare providers for clinical use. Its simple saliva test provides results in 15 minutes, confirming whether reflux is the cause of your symptoms.
[1] Wu Q, et al. (2024). Gastroesophageal reflux disease influences blood pressure components, lipid profile and cardiovascular diseases: Evidence from a Mendelian randomization study. Journal of Translational Internal Medicine, 12(5):510-525.
[2] Anebo T, et al. (2025). Gastroesophageal Reflux Disease (GERD) and Risk of Incident Acute Myocardial Infarction: A Systematic Review and Meta-Analysis of Cohort Studies. JGH Open, 9(10):e70295.
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